Mold for concrete burial vaults



c. M. JOHNSON MOLD FOR CONCRETE BURIAL VAULTS Filed 8mm 9, 1924 C. M.JOHNSON I MOLD FOR CONCRETE BURIAL VAULTS Filed June 9, 192.4. 2 ems-5mm2 Patented Nov. 25, 1924.

MOLD FOR CONCRETE BUBIAL VAULTS.

' Application filed June 9,

To all whom it may concern Be it known that I, CARL M. JOHNSON, acitizen of the United States of America, and a resident of Chicago,county of Cook, and State of Illinois, have invented a new and usefulImprovement in Molds for Concrete Burial Vaults, of which the followingis a specification.

The main objects of this invention are to provide an improved form ofmold for making receptaclesof plastic material, and particularly for usein making concrete burial vaults; to provide a mold of this kind havingan improved construction and-arrangement of detachable parts adapted tobe readily set up and stripped; to provide improved fastening means forlocking the parts of the mold in their assembled relation; and toprovide a mold of this kind having means for molding an improved form ofrim on the burial vault which is adapted to form a water-tight sealbetween the body of the vault and the cover.

An illustrative embodiment of this invention is shown in theaccompanying drawings, wherein- Figure 1 is a plan, partly broken away,of the mold for making the body of the vault.

Fig. 2 is a longitudinal vertical section taken on the line 22 of Fig.1.

Fig. 3 is a detail in elevation of the corner sections and fasteningmeans.

Fig. 4 is an enlarged detail of the looking means.

Fig. 5 is a plan, partly broken away, of the mold for making the coverof the vault.

Fig. 6 is a longitudinal section of the cover mold, taken on the line6--6 of Fig. 5.

Fig. 7 is a transverse section of the finished vault.

Fig. 8 is an enlarged detail in section of the improved rim joint whichseals the vault.

In the specific construction herein shown, the improved mold for makingthe body of the vault includes an inner shell or core 1, and an outershell 2 supported on a rectangular frame or base 3, which is mounted onblocks 4 and on which is also supported a rim section 5 between the twoshells for molding the rim of the vault body. During the pouring of theconcrete or other plastic material, the body mold is arranged in theinverted position shown in Fig. 2, and then 1924. Serial No. 718,784,

after the material has set, the mold is reversed to permit the strippingof the shells.

As illustrated, the core 1 includes a plurality of wall sections 6 whichare detachably secured together'by spacer sections 7, and on'which isloosely supported horizontal plates 8 and 9 forming the mold section forthe bottom of the vault. The wall sec tions 6 are preferably four innumber, and, as illustrated, each. comprises a sheet metal plate 10,bent to form, a side part 11 and an end part 12, which are reinforced byangle bars 13 extending along the upper and lower edges thereof and byvertical strips or bars 14 arranged adjacent each end thereof. The anglebars 13 and bars 14 are located on the inner side of the core 1, asshown in Fig. 2. v The upper angle bars 13 are spaced a short distancebelow the upper edges of the plates 11 and 12, so as to form a seat forsupporting the horizontal bottom plates 8 and 9, which lie flush withthe upper edges of the wall sections 6. The vertical strips 14 arespaced inwardly from the ends of the wall plates 11 and 12, as shown inFig. 1, to form bearing parts for the spacer sections 7. Mounted on thestrips 14, are studs or bolts 15, having heads 16 which are adapted toproject through the spacer sections, as hereinafter described.

In the form shown, the spacer section 7 comprises a central part 17adapted to fit between the strips 14 and the ends of the wall plates soas to form a continuation of the wall molds. Projecting laterally fromthe central section 17, is a pair of oppositely extending flanges 18adapted to abut against the strips 14 of the wall sections 6, and havingapertures 19 for receiving'the bolts 15. The up er ends of the spacersections 7 are flush with the upper angle bars 13, and the lower endsthereof rest upon the supporting frame 3. Arranged on the flanges 18 onopposite sides of each of the apertures 19, is a pair of wedges 20 whichare inclined in respectively opposite directions to form cams whichcoact with buttons 21 pivotally mounted on thebolts 15. The buttons 21are provided with key-hole slots 22 for receiving the bolts 15, andwhich are arranged to permit the buttons to be inserted and withdrawnover the heads 16 of the bolts. The buttons 21 are shiftable intoposition to bear between the heads 16 and the wedges 20 for clamping thespacer sections 7 to the wall sections 6. Extending transversely acrossthe spacer sections 7, are brackets 23 having apertures 24 for receivingtheends of brace rods 25, which form additional means for securing thewall sections against buckling. Each of the brace rods 25 is providedwith a turnbuckle 26. Cleats 27, which are mounted on the supportingframe 3, coact with the lower angle bars 13 for securing the wallsections 6 against shifting relative to the supporting base.

Extending transversely across the lower face of the horizontal plate 8,is an angle bar 28 which projects beyond the end of said plate to form aseat for supporting the opposed end of the plate 9. A handle 29 is alsomounted on the plate 8 to facilitate its re-v moval in stripping themold.

In the specific form illustrated, the outer shell 2 comprises side wallsections 30 and end wall sections 31, having secured to each end thereofa corner section 32 which is adapted to be detachably secured to anadjacent corner section for clamping the parts of the outer shelltogether. The wall sections 30 and 31 are preferably sheet metal platesreinforced by longitudinally extending an le bars 33 arranged on theoutside of the mrfid. The lower parts 34 of the wall sections 30 and 31are suitably shaped to form a rim on the vault body of any desiredcontour. Cleats 35 are mounted on the supporting base 3 and coact withthe lower bars 33 for securing the outer shell against shifting relativeto the base and inner core.

A pair of corner sections 32 is required for each corner of the shell 2,as shown in Fig. 3, and each of these corner sections comprises a formpart 36 forming a continuation of the wall sections 30 and 31, and beingrecessed as shown at 37 to receive the ends of the wall plates 30 and31. The corner sections 32 are rigidly secured to the wall plates 30 and31 by rivets or other suitable fastening means, not shown. Extendingoutwardly from the form part 36 is a web 38, adapted to abut against thecorresponding web of an adjacent corner section. Formed in the webs 38,are apertures 39 for receiving a locking bolt 40, having a head 41 atone end thereof and being threaded at its other end to receive a nut 42.and a lock nut 43. Ar-

ranged on the web 38 on opposite sides of the aperture 39, is a pair ofwedges 44 which are inclined in respectively opposite directions to formcams which coact with a button 45, pivotally mounted on the bolt 39. Thebutton 45 may be arranged on either end of the bolt 40 so as to coactwith either pair of the wedges 44. Formed in the webs 38 are inclinedslots 46 which extend from the apertures 39 to the outer edges of thewebs 38, whereby the bolt 40 and button 45 may be inserted and removedas a unit, which facilitates the setting up and stripping of the moldsections. The nuts 42 permit adjustment of the buttons 45. Formed in thewebs 38 adjacent the upper and lower end thereof, are apertures 47arranged to receive tapered pins 48 for holding the two corner sections32 in alinement.

In the specific construction herein shown,

the mold section 5 for molding the rim of the vault body, comprises ametallic plate arranged between the shells 1 and 2 and rigidly securedto the base 3 by screws 49 or other suitable fastening means. Formed onthe plate 5, is a pair of substantially parallel ridges 50, adapted tovmold a pair of spaced grooves in the rim of the vault body to receivecement or other plastic material with which the cover is sealed to thebody.

As illustrated, the cover mold comprises an inner shell or core 51, andan outer shell 52, supported on a rectangular frame or'base 53, which ismounted on blocks 54, and on which is also supported a rim section 55between the two shells for molding the rim of the vault cover.

In the form shown, the inner core comprises a top plate 56, securedalong its edges to side plates 57. The lower edges of the side plates 57rest in a groove 58 formed in the rim plate 55.

The outer shell 52 comprises a pair of end sections 59 and side sections60. The end sections 59 are suitably shaped to provide the desiredcontour to the ends of the vault cover, and are recessed at each endthereof, as shown at 61, to receive the ends of the side sections 60.Formed on the end secthe base 53, coact with the side rails 60 forsecuring them against outward bulging.

The rim plate 55 is arranged between the shells 51 and 52 and is rigidlysecured to the base 53 by screws 66 or other suitable fastening means.Formed on the plate 55, is a pair of substantially parallel grooves 67and a central ridge 68 adapted to mold a pair of spaced ridges'and acentral groove in the rim of the vault cover. The ridge 68 is of greaterheight than the height of the ridges 60 of the rim section 5 for thepurpose hereinafter setforth.-

To strip the cover mold after the cover is finished the clamps 64 arereleased to permit removal of the rails 60, and the end sections 59 arethen swung outwardly away from the finished cover. The cover may then belifted from the inner core 56. To strip the body mold, the outer core 2is removed from the finished vault, and the vault is then inverted topermit access to the clamp buttons 21. The buttons 21 are removed fromthe bolts to permit removal of the wall sections 6, and spacer sections7.

In the specific construction herein shown, the mold is adapted formaking concrete burial vaults of the type shown in Fig. 7, whichincludes a body part 69 having a rim 70, and a cover part 71 having arim 72. Formed in the rim 70, is a pair of spaced grooves 7 3 and acentral ridge 74. Formed on the cover rim 72, is a pair of spaced ridges75 adapted to fit within the grooves 73, and a central groove 76, whichis of greater depth than the height of the ridge 74 so as to provide anair pocket above the ridge 74 when the vault cover is placed on thebody.

In sealing the vault, the rim of the body is covered with cement orother suitable plastic material before the cover is lowered into place.In lowering the cover into a grave, sand or dirt from the sides of thegrave frequentl falls onto the rim of the vault body, and when permittedto remain there, the cement at this point of the rim does not adhere tothe cover. With the rim constructions heretofore in use, water would bepermitted to seep through the rim at any point where sand or dirt hadprevented an effectual seal. With the present improved rim construction,if the cement seal is not effectual at any point in the rim, the airpocket located in the groove 76 of the vault cover prevents any waterfrom rising over the ridge 7 4.

Although but. one specific embodiment of this invention has been hereinshown and described, it will be understood that numerous details of theconstruction shown may be altered or omitted without departing from thespirit of this invention as defined by the following claims.

I claim:

1. A mold of the class described comprising separable sections, a bolton one of said sections and projecting through an aperture in the otherof said sections, a cam on said other section, and a button pivotallymounted on the outer end of said bolt and shiftable into engagement withsaid cam for clamping said sections together.

2. A mold of the class described comprising separable sections, a bolton one of said sections and projectin through an aperture in the otherof sai sections, a pair of wedges on said other section and arranged onrespectively opposite sides of said bolt, and a button p-ivotallymounted on the outer end of said bolt and shiftable into engagement withsaid wedges for clamping said sections together.

3. A mold of the class described comprising separable sections, a bolton one of said sections and projecting through an aperture in the otherof said sections, shoulders on said bolt and other section, and a buttonpivotolly mounted on said bolt and adapted to bear between saidshoulders for clamping said sections together.

4. A mold of the class described comprising separable sections, a bolton one of said sections and projecting through an aperture in the otherof said sections, a cam on said other section, a nut threaded on theouter end of said bolt, and a button pivotally mounted on said bolt andadapted to bear between said nut and cam for clamping said mold sectionsto ether.

5. A mold of t e class described comprising separable sections, a bolton one of said sections and projecting through an aper-v ture in theother of said sections, a cam on said other section, and a' buttonhaving a key-hole slot for receiving the shank of said bolt whereby saidbutton is adapted to bear between said cam and the head of said bolt forclamping said sections together, art of said slot being arranged toermit said button to be withdrawn over t e head of said bolt forstripping the mold.

6. A mold of the class described comprising'separable sections, a bolton one of said sections and projecting through an aperture in the otherof said sections, a pair of wedges on said other section and arranged onrespectively'opposite sides of said bolt, a nut threaded on the outerend of said bolt, and a button having a key-hole slot for receiving theshank of said bolt whereby said button is adapted to bear between saidnut and wedges for clamping said sections together, part of said slotbeing arranged to permit said button to be withdrawn over said nut forstrippin the mold.

7. A mol of the class described comprising separable sections, a bolt onone of saidsections and projecting through an aperture in the other ofsaid sections, shoulders on said bolt and other section, and a buttonpivotally mounted on said bolt and adapted to bear between saidshoulders for clamping said sections together, said other section havinga slot extending from one edge thereof to said aperture to permit saidbolt to be withdrawn through said slot in stripping the mold upon therelease of said button.

8. A mold of the class described comprising a pair of wall sections, aspacer section arranged between said wall sections and having a partarranged to form a continuation thereof, bolts on said wall sections andprojecting through apertures in said spacer section, shoulders on saidbolts and spacer section, and buttons pivotally mounted on said boltsand adapted to bear between said shoulders for clamping said sectionstogether'. a

9. A mold of the class described compnsing a pair of wall sections, aspacer section arranged between said wall sections and havinga artarranged to form a continuation -sai wedges for clamping said sectionstogether.

10. A mold of the class described comprising a pair of wall sections, apair of corne sections located between said wall sections to form acontinuation thereof, a bolt on one of said .corner sections andprojecting shoulders for clamping said corner sections through anaperture in the'other of said corner sections, shoulders on said boltand other section, and a button pivotally mounted on said bolt andadapted to bear between said together. 1

11. A polygonal mold of the class des scribed comprising wallsections,,a pair of corner sections located at each corner of the mold,each of said corner sections being rigertures in each idly secured to anadjacent wall section, bolts extending through registering apertures' ineach pair of said corner sections, wedges arranged on said cornersections adjacent said apertures, and buttons pivotally mounted on saidbolts and shiftable into engagement with said wedges for clamping saidmold sections together.

12. A polygonal mold of the class described comprising wall sections, apair of corner sect.ons located at each corner of the mold, each of saidcorner sections being rigidly secured to an adjacent wall section, boltsextending through registering apair of said corner sections, wedgesarrange on said corner sections adjacent said apertures, and buttonsplvotally mounted on said bolts and shiftable into engagement with saidwedges for clamping said mold sections together, said cornersectionshaving slots extending from one edge thereof to said aperturesto permit the withdrawal of said bolts through said slots.

vSigned at Chicago this 7th day of June 1924.

CARL M. JOHNSON.

